47 017 409 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷³

TF target 2⁷²

P-1

B1 =	470000
B2 =	2467500

Status	Date	User	Residue	Shift	Software
Bad	2009-01-04	curtisc	1315D0CA5B5B8C29	35803967	Windows,Prime95,v24 final,NT service,(aka Wc5)
Bad	2018-05-15	Nonickname	F53DE5E8C2F3D805	34570591	Windows 64-bit,Prime95,v29.4,build 7
Verified	2018-12-08	Emanuele Bergamini	016DA236476177EB	31207664	Mac OS X 64-bit,Prime95,v29.4,build 7
Verified	2018-12-19	MadPoo 🙂	016DA236476177EB	18707314	Windows 64-bit,Prime95,v29.4,(aka Wg4)

History

Date	User	Type	Result
2024-05-30	LaurV	NF	no factor TF: 68-69
2018-12-19	MadPoo 🙂	C-LL	016DA236476177EB
2018-12-08	Emanuele Bergamini	C-LL	016DA236476177EB
2018-05-15	Nonickname	C-LL	F53DE5E8C2F3D805
2017-09-28	Mark Rose	NF	no factor TF: 72-73
2015-12-04	-anonymous-	NF	no factor TF: 71-72
2015-09-30	VictordeHollander	NF	no factor TF: 70-71
2015-09-02	Mark Rose	NF	no factor TF: 69-70
2013-10-18	Carsten Kossendey	NF	no factor TF: 68-69
2010-01-04	silky_smooth	NF	no factor TF: 1-68
2009-01-04	curtisc	C-LL	1315D0CA5B5B8C29
2008-11-20	curtisc	NF-PM1	B1=470000, B2=2467500
2008-03-03	silky_smooth	NF	no factor TF: 1-68
2006-06-13	Clark B. Wierda	NF	no factor TF: 1-62